Ink-feeding attachment for printing-presses



2 Sheets-Sheet 1.

(No Model.)

F. J SEDER. INK FEEDING ATTACHMENT FOR PRINTING PRESSES.

No. 424,029. Patented Mar. 25, 1890.

'NI Puma Pmwunw n m, Wuhingion. n, a

UNITED ST TES PATENT OFFICE.

FRANK J. SEDER, or CLEVELAND, OHIO.

INK-FEEDING ATTACHMENT F OR PRlNTlNG-PRESSES.

SPECIFIGATIOLT forming part of Letters Patent No. 424,029, dated March 25, 1890.

Application filed November 16, 1889. Serial No. 330,580. (No model.)

To aZZ whom it may concern:

Be it known that I, FRANK J. SEDER, a citizen of the United States, residing at Cleveland, in the county of (Juyahoga and State of Ohio, have invented certain new and useful Improvements in Ink-Feeding Attachments erally fall by gravity down the sloping bot tom of thefountain, and thus always re- -main in contact with the fountain-roller; but;

when a stifi ink is used it will not run, and the roller, after a few revolutions, will be no longer in contact with it. It is therefore necessary for the pressman to frequently push the ink against the roller, and thereby secure the proper ink-supply upon the form-rollers. This requires a constant watchfulness on the pressmans part and a frequent stopping of the press, or at least a cessation of the printing process.

The object of my invention is to provide an attachment for a printing-press by which the ink is automatically pushed toward the fountaim-roller and kept in contact therewith until so much of the ink as the attachment is adapted to move into contact therewith is substantially exhausted.

To this end my invention consists, primarily, of a knife arranged in the fountain, combined with mechanism for moving said knife toward and from the fountain roller at frequent intervals.

It also consists in the combination and arrangements of parts, and in the details of construction hereinafter described, and pointed out definitely in the claims.

The drawings represent an embodiment of my invention applicable particularly to what is known as the Cranston cylirider-press.

In the drawings, Figure l representsa side elevation of the ink-fountain having my improvement applied thereto. Fig. 2 is a transverse sectional view of the same. Fig. 3 is a top plan view. Fig. 4. is a detached view of the reciprocating knife and the frame to which it is attached; and Fig. 5 is a transverse sectional view of a part of said frame, showing the particular means I prefer for attaching the knife to the frame. 7

Referring to the parts by letter, A represents the ink-fountain, in the lower side of which is journaled the fountain-roller B. In the bottom of this fountain is generally placed an adjustable feed-knife G, or, as it is sometimes called, an ink-doctor. The ink is placed upon this feed-knife in contact with the roller. Upon the end of the roller is generally placed a ratchet-wheel b, and a pawl D, pivoted to a reciprocating lever d, causes said roller to revolve step by step. Besides sustaining the ink, the feed-knife C also regulates by its position the amount of ink which the roller shall carry away. In order that this ink shall be pushed down automatically into contact with the roller, I provide a feeding-knife E, the lower edge of which rests upon the feed-knife O. This knife is connected to the front bar of a suitable frame F, which is moved back and forth by the oscillation of the rock-shaft G. This rock-shaft is journaled in brackets H, which in the frame shown are secured to the i.nk-fountain. Upon each end of the rock-shaft is secured a crankarm g, and to the outer ends of these crankarms the frame F is pivotally connected. The particular means shown for oscillating this rock-shaft consist in a depending crank-arm I, attached to the rock-shaft, which crankarm is connected by the link J to the same lever cl which operates the pawl D. The crankarm I is provided with a slot through which passes the pivot pin by which the link J is at tached thereto. By moving the pivot-pin up and down this slot and then securing it the throw of the knife is adjusted as circumstances may require. WVith the mechanism above described it to cause the fountain roller to revolve it also causes an oscillation of the rock-shaft, by which the knife E is movedtoward the fount= will be noticed that when the lever d is moved ain-roller, thereby pushing the ink before it.

The lower edge of this knife slides back and forth upon the feed-knife O, and in its backward movement will slide over any obstacle thereon. The ink adheres to the knife, and as said knife moves backward and forward the ink is worked-that is to say, its pari ticles are kept in motion-which serves to keep the ink in a plastic condition, and at each forward movement of the knife the ink is pushed toward the feed-roll and into contact therewith. Without some such attachment as this the ink in the fountain becomes stiff, and after a few revolutions of the roll is no longer in contact therewith.

By the use of the above-described attachment a very considerable quantity of the ink in a fountain may be used without attention from the pressman. hen the knife no longer moves the ink into contact with the roller, the throw of said knife is adjusted anew, as above pointed out.

hen a narrow form is being printed upon the press, it is customary to use only a part of the ink-fountain.

In order that my attachment may be used with a printing-press at such times, I make the feeding-knives E in sections, which I se cure by means of set-screws in a slot in the front bar of the frame. Thus if only a part of the fountain is being used and partitions are placed therein to prevent the spreading of the ink beyond the required limits I attach to the front bar of my oscillating frame a knife or several knife-sections of suflicient width to operate easily between the partitions in the fountain.

The above-described embodimentof myinvention is the best form now known to me for use with the Cranston press; but the invention may readily be adapted to use with other presses, and generally with no change except in the particular mechanism for operating the rock-shaft.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is v 1. In a printing-press, in combination, an ink-fountain, a fountain-roller, a knife, and mechanism for sliding said knife in said fountain toward and from the roller, substantially as and for the purpose specified.

2. In a printing-press, in combination, an ink-fountain, a fountain-roller, a rock-shaft and means for oscillating the same, a frame operated thereby, and a knife secured to said frame and adapted to move back and forth within the ink-fountain toward and from the roller, substantially as and for the pn rpose specified.

3. In a printing-press, in combination,an ink-fountain and a fountain-roller, a reciprocating lever adapted to revolve said roller automatically, a rock-shaft having crank-arms attached thereto, a frame pivotally connected with said crank-arms, a knife attached to said frame, a slotted crank-arm attached to said rock-shaft, and a link connecting said crankarm with the said lever, substantially as and for the purpose specified.

4. In a pi'intingpress, in combination, an ink-fountain, a fountain-roller, an oscillating lever adapted to revolve said roller intermittently, a rock -shaft, crank-arms attached thereto, suitable connections between said lever and rock-shaft whereby the same is oscillated, a frame attached to said crank-arms, and a sectional knife removably secured to the front end of said frame, substantially as and for the purpose specified.

FRANK J. SEDER.

Witnesses:

E. L. THURSTON, FRANK. MILLER.

may, 

